The last step of DNA replication is when everything is proofread to eliminate mistakes.
That is option A.
DNA replication includes series of processes whereby a cell uses its DNA to make new copies of its DNA in the cells.
There are various steps in DNA replication and the last of the steps is called termination.
In this last step of DNA replication, an enzyme called exonuclease proofreads the newly formed DNA to check, remove and replace any errors.
Learn more about DNA here:
https://brainly.com/question/1328358
#SPJ1